JPH0543479U - connector - Google Patents

Abstract

(57) [Abstract] [Purpose] To obtain a connector that maintains the fitting holding force between a pin contact and a contact portion, prevents the conductive metal plate from aging, and can be downsized. [Structure] When the pin contact (14) is inserted from the pin contact insertion portion (8) of the housing (3) and the contact portion of the thin leaf spring material (2) is pushed open, the thin leaf spring material (2) is inserted into the hollow portion of the housing. (10) Because there are limited escape areas, thin leaf spring material
The elliptical part (5) of (2) is the pin contact (14) and the thin leaf spring material.
Due to the dynamic friction of (2), it is transformed into a wavy shape. As a result, the fitting holding force between the pin contact and the thin leaf spring material increases, and when this fitting holding force increases, the contact between the pin contact and the contact portion due to the dynamic friction when the pin contact is attached to and detached from the thin leaf spring material. Since the oxide film and the insulating film on the surface can be eliminated, the aging of the thin leaf spring material is prevented. Further, the connector can be downsized as a whole.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a connector used for various electrical connections such as automobile wiring and electric equipment.

[0002]

[Prior Art]

 With the development of electronics, the demand for connectors used for electrical connection is ever increasing. At present, most of these connectors store an electrically conductive metal plate in which a contact part is bent in a housing, insert a pin contact into the housing, and bring the pin contact and the contact part into contact with each other to make electrical contact. I was making a connection.

[0003]

[Problems to be solved by the device]

 However, in the above-mentioned conventional connector, the conductive metal plate is simply housed in the housing. Therefore, if the number of attachments and detachments of the pin contact and the contact portion increases, the pin contact and the contact There was a problem that the fitting retention force with the part was reduced.

When the fitting holding force is reduced, the oxide film or the insulating film on the contact surface cannot be removed by the dynamic friction when the pin contact and the contact part are attached and detached, and the conductive metal plate is aged. There was a point. Further, in order to increase the fitting holding force between the pin contact and the contact portion, the conductive metal plate must be made large, which causes a problem that the connector is upsized.

In view of the above problems of the prior art, the present invention maintains the fitting holding force between the pin contact and the contact point, prevents the conductive metal plate from aging, and reduces the size. The purpose is to provide a possible connector.

[0006]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the connector of the present invention is formed by bending the central portion in the longitudinal direction, and has a thin leaf spring material provided with an overlapping portion, an elliptical portion, a contact portion, and an arcuate opening portion, and a pin contact at one end. An insertion portion for the overlapping portion of the thin leaf spring material is provided at the insertion portion and the other end, and the pin contact insertion portion and the insertion portion are communicated inside to accommodate the elliptical portion, contact portion, and arcuate opening portion of the thin leaf spring material. And a housing provided with a hollow portion having a substantially rectangular parallelepiped shape, the tip of the arc-shaped opening of the thin plate spring member is directed toward the pin contact insertion portion and abutted on a corner of the hollow portion, The top of the elliptical portion of the spring member is brought into contact with the upper and lower walls of the hollow portion.

[0007]

[Action]

 When the pin contact is inserted from the pin contact insertion part of the housing and the contact part of the thin leaf spring material is pushed wide, the thin leaf spring material has limited escape places in the hollow part of the housing. Due to the dynamic friction between the pin contact and the thin leaf spring material, it deforms into a wave shape.

As a result, the spring force of the wavy deformed thin leaf spring material is applied to the pin contact through the corners of the hollow portion where the tip of the arcuate opening abuts and the abutment portions of the hollow spring upper and lower walls of the thin leaf spring material. Since the force is transmitted to the contact point between the thin leaf spring material and the contact point, the pin contact and holding force of the thin leaf spring material increase.

When the fitting retention force increases, the pin contact and the oxide film or insulating film on the contact surface of the contact portion can be removed by dynamic friction when the pin contact is attached to or detached from the thin plate spring material. Aging is prevented. Further, the connector can be downsized as a whole.

[0010]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. (1) shows a connector of the present invention, which is composed of a socket contact pin (2) which is a thin leaf spring material and a housing (3).

As shown in FIG. 2, the socket contact pin (2) is bent and formed at its central portion, and the overlapping portion (4), the elliptical portion (5), the contact portion (6), and the arc-shaped opening portion (7). Is equipped with.

The socket contact pin is a thin plate-like member made of a highly conductive spring metal (for example, phosphor bronze, an alloy of beryllium copper and tin, etc.), and its width B is usually 0.3 mm to 0. It is about 5 mm and the minimum is 0.1 mm to 0.2 mm.

The housing (3) has a pin contact insertion portion (8) at its front end and an insertion portion (9) at its rear end into which the overlapping portion (4) of the socket contact pin (2) is inserted. There is.

Further, in the center of the housing (3), there is a hollow portion of a substantially rectangular parallelepiped shape for accommodating the elliptical portion (5) of the socket contact pin (2), the contact portion (6), and the arcuate opening portion (7). 10) is provided.

The hollow portion (10) is formed so as to connect the pin contact insertion portion (8) and the insertion portion (9).

In the hollow part (10) of the housing (3), the socket contact pin (2) is inserted into the hollow part (10) with the tip of the arcuate opening (7) facing the pin contact insertion part (8). It is provided so as to abut the corner portion (11) and the top of the elliptical portion (5) abut the upper and lower walls (12) and (13) of the hollow portion (10).

Reference numeral (14) is a pin contact electrically connected to the socket contact pin, the cross section of which is circular and the diameter is approximately 0.3 mm to 0.5 mm. It is appropriate that the length L of the hollow portion (10) of the housing is about 2 to 3 mm, and the shape of the pin contact insertion portion (8) is such that the pin contact (14) can be inserted. In this embodiment, as shown in FIG. 3, a rectangular shape with one side of 1 mm and 0.3 to 0.5 mm is adopted.

The cross-sectional shape of the hollow portion (10) orthogonal to the pin contact insertion direction is preferably a square with one side of about 1 mm (FIG. 4).

Next, the operation will be described with reference to FIG. Insert the pin contact (14) from the pin contact insertion part (8) of the housing (3). The pin contact (14) pushes the contact portion (6) of the socket contact pin (2) and spreads it to enter the rear end portion of the hollow portion (10).

At this time, the socket contact pin (2) has a limited escape area within the hollow portion (10), so that the elliptical portion (5) of the socket contact pin (2) becomes the pin contact (14). Due to the dynamic friction of the socket contact pin (2), it deforms into a wavy shape.

Accordingly, the spring force of the wavy deformed socket contact pin (2) is due to the corner (11) with which the tip of the arc-shaped opening (7) abuts and the hollow upper and lower walls of the socket contact pin (2). It is transmitted to the contact portion (6) of the socket contact pin (2), that is, the contact point of the pin contact (14) and the socket contact pin (2) via the contact portions of (12) and (13). Therefore, the fitting holding force between the pin contact (14) and the socket contact pin (2) is increased.

When the fitting holding force increases, the contact portion between the pin contact (14) and the socket contact pin (2) (due to dynamic friction when the pin contact (14) is attached to and detached from the socket contact pin (2). Since the oxide film or insulating film on the contact surface of 6) can be removed, the aging of the socket contact pin (2) is prevented. Further, the connector can be downsized as a whole.

FIGS. 6 and 7 show an embodiment in which the plurality of pin contacts are one film terminal plate (15). The film terminal board (15) is a thin plate multi-pole pin contact in which elongated strip-shaped conductive terminals (17) are formed on both sides of a synthetic resin flexible base film (16) by printed wiring means. Is.

The socket contact pin (2) is housed in a hollow portion (10 ') provided side by side in a flat housing (3') that is long in the left and right in the axial direction. In front of the hollow part (10 '), at a position corresponding to the pin contact insertion part (8), a gap is connected in the left-right direction at an interval slightly larger than the thickness of the base film (16), and each hollow part (10) is connected. The pin contact insertion part (8 ') common to the base plate (16') is formed, and the base film (16) is inserted into the insertion part (8 ').

The overlapping part (4) of the socket contact pin (2) is inserted into the insertion part (9) behind the hollow part (10 ′), and the end part protruding from the housing (3 ′) of the socket contact pin (2) is It is bent downward at a right angle to facilitate mounting on printed circuit boards.

In this embodiment, the film terminal board (15), which is based on the flexible and relatively soft base film (16), has a non-rigid soft socket contact pin (2). When pressed into place so that they are sandwiched from both sides and inserted into the deepest part, the contact area is expanded over the entire area, and with an average surface contact with no locally strongly pressed parts, the conductive terminal part (17) The socket contact pins (2) are in contact.

As a result, even after being in contact for a long time, there is no change over time such as deformation of the press contact portion or reduction of the elastic force of the elastic body. In addition, since the contact part does not have an angled part that creates a locally strong pressure part to increase the contact pressure, the base film (16) and the conductive terminal part (17) will not be damaged even if many connections are repeated. There is nothing to do.

[0028]

[Effect of the device]

 Since the present invention has the above-mentioned configuration, it has the following effects.

(1) When the pin contact is inserted from the pin contact insertion part of the housing and the contact part of the thin plate material is expanded, the thin plate spring material has a limited escape place in the hollow part of the housing. The elliptical portion of the spring material is deformed into a wavy shape due to the dynamic friction between the pin contact and the thin leaf spring material. As a result, the spring force of the thin leaf spring material deformed in a wave shape is applied to the pin contact and the thin leaf spring material through the corners where the tips of the arc-shaped openings abut and the abutment portions of the hollow upper and lower walls of the thin leaf spring material. Since the force is transmitted to the contact point, the force of holding the pin contact and the thin leaf spring material is increased.

(2) Due to the increase in the fitting holding force, the oxide film or the insulating film on the contact surface of the pin contact and the contact portion can be removed by the dynamic friction when the pin contact is attached to or detached from the thin plate spring material. Aging of the spring material is prevented.

(3) By simply bending the thin leaf spring at its central portion, the overlapping portion, the elliptical portion, the contact portion, and the arc-shaped opening are formed, and the thin leaf spring material is housed in the hollow portion of the housing. Since the connector is constructed, its structure is simple, and it can be manufactured accurately and at low cost.

(4) Since the thin leaf spring material can be used, the connector can be downsized.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing a connector according to an embodiment of the present invention.

FIG. 2 is a perspective view of a socket contact pin that constitutes the connector according to the embodiment of the present invention.

FIG. 3 is a transverse cross-sectional view showing the shape of the pin contact insertion portion of the housing that constitutes the connector of the embodiment of the present invention.

FIG. 4 is a transverse cross-sectional view showing the shape of the hollow portion of the housing constituting the connector according to the embodiment of the present invention.

FIG. 5 is a vertical cross-sectional view showing a state in which pin contacts are inserted in the connector of the embodiment of the present invention.

FIG. 6 is a vertical sectional view showing another embodiment of the present invention.

7 is a vertical sectional view taken along the line AA in FIG.

[Explanation of symbols]

(1) Connector (2) Socket contact pin (thin leaf spring material) (3) (3 ') Housing (4) Overlapping part (5) Elliptical part (6) Contact part (7) Arc opening (8) (8' ) Pin contact insertion part (9) Insertion part (10) (10 ') Hollow part (11) Corner part (12) Upper wall (13) Lower wall (14) Pin contact (15) Film terminal board (16) Base film (17) Conductive terminal

Claims (1)

[Scope of utility model registration request] 1. A thin leaf spring material formed by bending at a central portion in a length direction and provided with an overlapping portion, an elliptical portion, a contact portion, and an arc opening, a pin contact insertion portion at one end, and the thin leaf spring at the other end. An insertion portion of the overlapping portion of the material is provided, the pin contact insertion portion and the insertion portion are communicated with each other, the elliptical portion of the thin leaf spring material,
A housing provided with a hollow portion having a substantially rectangular parallelepiped shape for accommodating the contact portion and the arc-shaped opening portion, with the tip of the arc-shaped opening portion of the thin leaf spring member facing the pin contact insertion portion, and a corner portion of the hollow portion. And the top of the elliptical portion of the thin leaf spring member is brought into contact with the upper and lower walls of the hollow portion.